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Top 5 largest crustaceans

evergreen

The 5 largest crustaceans by size / mass: Japanese Spider Crab, American Lobster, Tasmanian Giant Crab, Coconut Crab, Giant Isopod.

Snapshot · 2026-09-23

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  1. 1

    Japanese Spider Crab

    ~3.75 m leg span

  2. 2

    American Lobster

    up to ~20 kg, ~1 m

  3. 3

    Tasmanian Giant Crab

    up to ~13 kg

  4. 4

    Coconut Crab

    up to ~4 kg (largest land arthropod)

  5. 5

    Giant Isopod

    up to ~50 cm